Method and apparatus for outputting sound source based on amplification power control according to volume level

Abstract

Disclosed are a sound source output apparatus based on amplification power source control according to a volume level and an operating method thereof. The sound source output method according to the exemplary embodiment of the present disclosure includes a volume level sensing step of sensing a volume level; a control step of generating a voltage control signal by determining an amplification power voltage for an amplification operation based on the sensed volume level; a power applying step of applying the adjusted amplification power voltage based on the voltage control signal; an audio signal generating step of generating an audio signal by performing an amplifying operation of the sound signal which is converted based on the amplification power voltage; and an audio output step of outputting the audio signal.

What is claimed is: 
     
         1 . A method for outputting a sound source by a sound source output apparatus, the method comprising:
 a volume level sensing step of sensing a volume level;   a control step of generating a voltage control signal by determining an amplification power voltage for an amplification operation based on the sensed volume level;   a power applying step of applying the adjusted amplification power voltage based on the voltage control signal;   an audio signal generating step of generating an audio signal by performing an amplifying operation of the sound signal which is converted based on the amplification power voltage; and   an audio output step of outputting the audio signal.   
     
     
         2 . The method for outputting a sound source according to  claim 1 , wherein in the volume level sensing step, the change in volume level by the manipulation of a user or an input is sensed. 
     
     
         3 . The method for outputting a sound source according to  claim 1 , wherein the control step includes:
 a voltage determining step of determining the amplification power voltage for an amplifying operation by comparing the sensed volume level with a predetermined volume table; and   a voltage control signal generating step of generating the voltage control signal for power source control with the determined amplification power voltage.   
     
     
         4 . The method for outputting a sound source according to  claim 3 , wherein in the voltage determining step, a predicted amplification power voltage derived by comparing the sensed volume level with the predetermined volume table is compared with a predetermined reference amplification power voltage and an amplification power voltage is determined based on a comparison result. 
     
     
         5 . The method for outputting a sound source according to  claim 4 , wherein in the voltage determining step, when the predicted amplification power voltage is equal to or lower than the reference amplification power voltage, the reference amplification power voltage is determined as the amplification power voltage. 
     
     
         6 . The method for outputting a sound source according to  claim 4 , wherein in the voltage determining step, when the predicted amplification power voltage exceeds the reference amplification power voltage, the predicted amplification power voltage is determined as the amplification power voltage. 
     
     
         7 . The method for outputting a sound source according to  claim 3 , wherein the control step further includes:
 a sound source analysis step of analyzing a sound source signal to extract sound source analysis information and   in the voltage determining step, the amplification power voltage is determined by considering the sound source analysis information.   
     
     
         8 . The method for outputting a sound source according to  claim 7 , wherein in the voltage determining step, the amplification power voltage is determined by performing the voltage adjustment for every genre, based on the genre information included in the sound source analysis information. 
     
     
         9 . The method for outputting a sound source according to  claim 7 , wherein in the voltage determining step, the voltage is adjusted according to the sound width of the sound source signal based on the sound wave analysis information included in the sound source analysis information, to determine the amplification power voltage. 
     
     
         10 . The method for outputting a sound source according to  claim 1 , wherein the power applying step includes:
 a voltage adjusting step of adjusting a predetermined voltage with the amplification power voltage based on the voltage control signal; and   a voltage applying step of applying the adjusted amplification power voltage for the amplifying operation.   
     
     
         11 . The method for outputting a sound source according to  claim 10 , wherein in the voltage adjusting step, the predetermined voltage is adjusted as the amplification power voltage by means of at least one switching of the plurality of resistors. 
     
     
         12 . The method for outputting a sound source according to  claim 10 , wherein in the voltage adjusting step, the amplification power voltage is adjusted in the range of a first input voltage (v+) and a second input voltage (v−) and
 the range of the first input voltage and the second input voltage is equal to or larger than a magnitude of the predetermined reference amplification power voltage. 
 
     
     
         13 . An apparatus for outputting a sound source, comprising:
 a volume level sensing unit which senses a volume level;   a controller which generates a voltage control signal by determining an amplification power voltage for an amplification operation based on the sensed volume level;   a power source unit which applies the adjusted amplification power voltage based on the voltage control signal;   an audio signal generator which generates an audio signal by performing an amplifying operation of the sound signal which is converted based on the amplification power voltage; and   an audio output unit which outputs the audio signal.   
     
     
         14 . The apparatus for outputting a sound source according to  claim 13 , wherein the controller includes:
 a voltage determining unit which determines the amplification power voltage for an amplifying operation by comparing the sensed volume level with a predetermined volume table; and   a voltage control signal generator which generates the voltage control signal for power source control with the determined amplification power voltage.   
     
     
         15 . The apparatus for outputting a sound source according to  claim 14 , wherein the voltage determining unit compares a predicted amplification power voltage derived by comparing the sensed volume level with a predetermined volume table with a predetermined reference amplification power voltage (a lowest amplification power voltage) and determines the amplification power voltage based on a comparison result. 
     
     
         16 . The apparatus for outputting a sound source according to  claim 14 , wherein the controller further includes:
 a sound source analysis unit which analyzes a sound source signal to extract sound source analysis information and   the voltage determining unit determines the amplification power voltage by considering the sound source analysis information.   
     
     
         17 . The apparatus for outputting a sound source according to  claim 13 , wherein the voltage applying unit includes:
 a voltage adjusting unit which adjusts a predetermined voltage as the amplification power voltage based on the voltage control signal; and   a voltage applying unit which applies the adjusted amplification power voltage for the amplifying operation.